/*
 * Copyright 2012 the original author or authors.
 *
 * Licensed under the Apache License, Version 2.0 (the "License");
 * you may not use this file except in compliance with the License.
 * You may obtain a copy of the License at
 *
 *      http://www.apache.org/licenses/LICENSE-2.0
 *
 * Unless required by applicable law or agreed to in writing, software
 * distributed under the License is distributed on an "AS IS" BASIS,
 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 * See the License for the specific language governing permissions and
 * limitations under the License.
 */

package be.free.ts.activity;

import be.free.ts.project.Project;
import be.free.ts.project.ProjectRepository;
import be.free.ts.support.DateTimeService;
import be.free.ts.support.PagingAndSortingService;
import com.google.common.collect.Lists;
import com.google.inject.persist.Transactional;

import javax.inject.Inject;
import javax.inject.Singleton;
import java.util.Date;
import java.util.List;

import static com.google.common.base.Preconditions.checkArgument;
import static com.google.common.base.Preconditions.checkState;

/**
 * @author Christophe De Blende
 * @since 08/12/12
 */
@Singleton
@Transactional
public class ActivityService extends PagingAndSortingService<ActivityRepository, Activity, Long> {

	private final ProjectRepository projectRepository;

	private final DateTimeService dateTimeService;

	@Inject
	public ActivityService(ActivityRepository activityRepository, ProjectRepository projectRepository,
						   DateTimeService dateTimeService) {
		super(activityRepository);
		this.projectRepository = projectRepository;
		this.dateTimeService = dateTimeService;
	}

	public List<Activity> findByProject(Long projectId) {
		checkArgument(projectId != null);
		checkState(projectRepository.exists(projectId), "Unable to find project with id '%s'", projectId);
		Project project = projectRepository.findOne(projectId);
		return Lists.newArrayList(getRepository()
				.findAll(Activities.forProject(project)));
	}

	public List<Activity> findByDate(Date date) {
		checkArgument(date != null);
		return Lists.newArrayList(getRepository()
				.findAll(Activities.contains(dateTimeService.newDateTime(date))));
	}
}
